Spacing mechanism for type-writers.



Z. G. SHOLES. SPACING MECHANISM FOR TYPE WRITERS.

' Patented Apr. 18,1916.

APPLICATION FILED JULY 12, I915.

nvmvron ATIORNEY$ onnicn ZAESMON G. SHQLES, F "WILIVIIlYFGTON, DELAW'ARE, ASSIGNOR TO SHOLES STANDARD COMPANY, OF WELIlfilINGTOIST, DELAWARE,

A CORPORATION 0F DEIZIL' SPACING MECHANISM F5311 TYPE JZRITERS.

mimics a is, leis.

Application filed July 12, 1915. Serial No. 39,476.

ritixcu ot' the United States. residing at W'ilingtoo, in the State oi Delaware, have invented curtain new and useful Improvements in Spacing Mechanism for TypelVriters; and l do hereby declare the following to be full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appcrtains to make and use the same. 4

The present invention refers to means whim-by the letter andword spacing mechanisin ot a typewriter may be accurately, quickly and conveniently adjusted at any time, with. respect to each-individual finger key and its HPPIOPIliLtB typebar.

It is well known that, by reason of differences in wear among themselves, the various key and type-bar groups develop differences in effectiveness under uniform finger strokes, however carefully they may have been adjusted originally. This becomes evident in different degrees of clearn'ess among the characters produced. The means hitherto proposed whereby readjustment may be accomplished for correction of these defects have involved considerable mechanical diiticulty, making necessary a correspondingly high degreeot skill in making such, corrections.

ltis the object of the present invention-to provide means whereby such adjustments may be conveniently and rapidly efi'e'cted by any typist, without calling upon expert mechanical aid.

The invention is also useful, of course, in facilitating the original adjustments at the factory.

This invention is illustrated in its prefcrred form in. the accompanying drawings, v;herein- Figure 1 is a rear view of certain portions of the complete typewriter, Fig. 2 is a horizontal view on 'a small scale of the improved universal bar and associated parts, Fig. 3 is a' side elevation of the spacing mechanism as related to the universal bar and an individual key bar. and Fig. l shows one of the adjustable abutments in section and lower end view.

The frame of the machine is indicated at 10. and this frame carries the usual carriage controlled as to spacing by the horizontal rack 11 and the escapement wheel 19. The

, nertion with the that the exact length spring drum for feeding tliecarriage is indicated at 13. Each key lever 14 of the machine, has a fulcrum, as at 15, and the contype bar is attachecl at l6 in any well known manner, this not forming a part of the present invention.;,""Thc universal spacing bar is shown at 17 and the same is attached by rods 18 to a revoluble bar 19 having suitable bearings 20 at the two sides of the machine. Extending rearward from the universal bar 17 is a bar 21 preferably bent backward as at 22in Fig. 2, so as to form a. loop across which the screw pin is placed. This pin plays in aslot 24 inthe connecting bar25,'which is connected through the bar 26 to the bell crank lever 27 pivoted 'at 28 and carrying the usual escapen'ient 29 cooperating in a'well known manner with the wheel '12. The mechanism 1 upper position of the universal bar is determined by the bail 82 orits equivalent which is attached to the bar 19 and whose end comes up against the stop'33; I

Each key lover, instead of coming down uponthe top' of the universal bar when a stroke is made, strikes an lndividual abutment which is afiorded by the head of a screw 34. as clearly shown in Fig. 4:. This screw is threaded into the bar 17 and is. provided underneath with a lock nut 35 having suitable cavities .36 to receive an appropriate tool for turning such nut on. the screw 34. It will be seenthat by this means, the distance through which the key lever must move before it afiects the universal bar is determined. by the position of the screw 34 in said key lever. In consequence, it follows of stroke of each key lever can be accuratelydetermined by turning the screw 34in the bar 17 having tight eued the lock out and when the proper position has been ascertained, the screw can be fixed in that position by tightening the lock .nut V Inasmuch as a. separate screw34 is ion stroke of all the bars is readily accomplished.

By this means any Wear inthe key levers or type bars or their bearings may be compen sated and proper ad ustment made :to pro What I claim is 1. iln a tvpwxriter, and in combination with the he levers and type bars thereof, a

spacing mechanism comprising auniversal bar under said hey lev a parallel bar mounted in front thereoif upon suitable hearings and connected with said universal bar, a lifting spring attached to said parallel bar, a stop on the frame of the machine, and means on said parallel bar adapted to strike said stop to limit the upward more-- menu of said universal our, substantially as described.

2. In a typewriter, and in combination with the key levers and type bars thereof, a spacing mechanism comprising a universal bar under said key levers, a second bar mounted parallel therewith and in front .there'of, a stop projecting inward from the ment of said second bar, substantially as described.

In testimony \vhereoi', I aihx my signature.

ZALMON G. SHOLES. 

